title: Declaring independence: why we should be cautious.
authors.forename: G D
authors.initials: GD
authors.lastname: Smith
authors.forename: A
authors.initials: A
authors.lastname: Phillips
mesh_terms: D015986:Confounding Factors, Epidemiologic; D003327:Coronary Disease / Q000453:epidemiology*; D015981:Epidemiologic Factors; D005260:Female; D006801:Humans; D016015:Logistic Models; D012307:Risk Factors; D002583:Uterine Cervical Neoplasms / Q000453:epidemiology